Biometry, Refractive Errors, and the Results of Cataract Surgery: A Large Sample Study
Table 3
Gender segmentation of the data.
Variables
Sex
Mean
Median
SD
Var
Skew
Kurt
Number
t-test
value
Age
F
68.77
70.00
10.70
114.49
−0.94
1.81
17811
0.78
0.43
M
68.67
70.00
10.93
119.51
−1.24
3.09
10441
AL
F
23.31
23.02
1.63
2.67
2.35
8.66
17802
30.91
<0.001
M
23.88
23.72
1.43
2.05
2.30
10.62
10437
ACD
F
2.95
2.95
0.42
0.18
0.33
1.40
17628
31.66
<0.001
M
3.13
3.13
0.44
0.20
0.31
2.22
10294
LT
F
4.57
4.58
0.50
0.25
−0.23
2.07
2681
2.58
0.01
M
4.53
4.50
0.55
0.31
−0.22
4.70
1714
SK
F
44.87
44.88
1.83
3.36
−0.60
6.02
17807
30.91
<0.001
M
44.17
44.18
1.83
3.34
−0.48
6.73
10440
FK
F
43.74
43.77
1.77
3.15
−0.96
6.52
17807
34.31
<0.001
M
43.00
43.05
1.74
3.03
−0.77
4.66
10440
Kav
F
44.31
44.33
1.74
3.03
−0.81
5.83
17807
33.83
<0.001
M
43.59
43.64
1.72
2.94
−0.73
6.08
10440
SE1
F
−0.91
−0.38
4.36
19.03
−1.14
4.26
12989
10.05
<0.001
M
−1.52
−1.50
4.03
16.22
−0.61
4.39
7498
SE2
F
−0.37
−0.38
1.03
1.06
0.36
29.66
14269
3.45
<0.001
M
−0.32
−0.25
1.02
1.03
0.21
28.28
8296
CYL1
F
−1.18
−1.00
0.89
0.79
−1.61
4.78
12989
7.07
<0.001
M
−1.27
−1.00
0.92
0.85
−1.37
3.43
7498
CYL2
F
−1.49
−1.25
1.07
1.16
−1.45
3.21
14269
3.36
<0.001
M
−1.54
−1.25
1.09
1.19
−1.40
3.15
8296
IOL
F
21.04
22.00
4.57
20.88
−2.23
8.18
17810
20.62
<0.001
M
19.99
20.00
3.85
14.80
−2.32
11.99
10441
PE
F
0.27
0.32
1.03
1.06
−0.32
27.16
14269
1.75
0.08
M
0.29
0.34
1.00
0.99
0.14
19.93
8296
A Student's t test for unpaired samples was performed in order to compare the means of each variable among sexes. p–value < 0.05 is considered as highly significant. Nonsignificant values are shown in boldface.
